/Engine/Source/Runtime/Engine/Public/Animation/AttributesRuntime.h
Blend custom attribute values from N set of inputs (ptr-values)
static void BlendAttributes ( const [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) *const > SourceAttributes, const [TArrayView](API\Runtime\Core\Containers\TArrayView)< const float > SourceWeights, [FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) & OutAttributes )